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论文类型： 期刊论文

发表时间： 2010-07-01

发表刊物： MATERIALS RESEARCH INNOVATIONS

收录刊物： SCIE、EI、Scopus

卷号： 14

期号： 3

页面范围： 206-209

ISSN号： 1432-8917

关键字： Powder metallurgy; Hot extrusion; Magnesium; Composites; Magnesium metal matrix composites

摘要： AZ31 magnesium alloy metal matrix composites (MMCs) reinforced with 5, 10, 15 and 20 wt-%ZrB2 were successfully fabricated by powder metallurgy and subsequent hot extrusion. The structural evolution of AZ31magnesium matrix composite was reinforced by ZrB2. Particles were characterised by optical microscope, XRD and SEM. The reasonably uniform distribution of ZrB2 reinforcement with good interfacial is present in the AZ31/ZrB2 composite. The hardness and wear behaviour were evaluated. The hardness of composites reinforced with 5, 10, 15 and 20 wt-%ZrB2 particulates were increased by 26.8, 41.5, 97.5 and 107% compared with as cast AZ31 magnesium alloy. Correspondingly, the wear resistance of AZ31 magnesium alloy MMCs increases with increasing reinforcement weight fraction.